1/* 2 * Copyright (c) 2013, 2017, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25#include "precompiled.hpp" 26#include "ci/ciMethodData.hpp" 27#include "ci/ciReplay.hpp" 28#include "ci/ciSymbol.hpp" 29#include "ci/ciKlass.hpp" 30#include "ci/ciUtilities.hpp" 31#include "compiler/compileBroker.hpp" 32#include "memory/allocation.inline.hpp" 33#include "memory/oopFactory.hpp" 34#include "memory/resourceArea.hpp" 35#include "oops/oop.inline.hpp" 36#include "prims/jvm.h" 37#include "utilities/copy.hpp" 38#include "utilities/macros.hpp" 39 40#ifndef PRODUCT 41 42// ciReplay 43 44typedef struct _ciMethodDataRecord { 45 const char* _klass_name; 46 const char* _method_name; 47 const char* _signature; 48 49 int _state; 50 int _current_mileage; 51 52 intptr_t* _data; 53 char* _orig_data; 54 Klass** _classes; 55 Method** _methods; 56 int* _classes_offsets; 57 int* _methods_offsets; 58 int _data_length; 59 int _orig_data_length; 60 int _classes_length; 61 int _methods_length; 62} ciMethodDataRecord; 63 64typedef struct _ciMethodRecord { 65 const char* _klass_name; 66 const char* _method_name; 67 const char* _signature; 68 69 int _instructions_size; 70 int _interpreter_invocation_count; 71 int _interpreter_throwout_count; 72 int _invocation_counter; 73 int _backedge_counter; 74} ciMethodRecord; 75 76typedef struct _ciInlineRecord { 77 const char* _klass_name; 78 const char* _method_name; 79 const char* _signature; 80 81 int _inline_depth; 82 int _inline_bci; 83} ciInlineRecord; 84 85class CompileReplay; 86static CompileReplay* replay_state; 87 88class CompileReplay : public StackObj { 89 private: 90 FILE* _stream; 91 Thread* _thread; 92 Handle _protection_domain; 93 Handle _loader; 94 95 GrowableArray<ciMethodRecord*> _ci_method_records; 96 GrowableArray<ciMethodDataRecord*> _ci_method_data_records; 97 98 // Use pointer because we may need to return inline records 99 // without destroying them. 100 GrowableArray<ciInlineRecord*>* _ci_inline_records; 101 102 const char* _error_message; 103 104 char* _bufptr; 105 char* _buffer; 106 int _buffer_length; 107 int _buffer_pos; 108 109 // "compile" data 110 ciKlass* _iklass; 111 Method* _imethod; 112 int _entry_bci; 113 int _comp_level; 114 115 public: 116 CompileReplay(const char* filename, TRAPS) { 117 _thread = THREAD; 118 _loader = Handle(_thread, SystemDictionary::java_system_loader()); 119 _protection_domain = Handle(); 120 121 _stream = fopen(filename, "rt"); 122 if (_stream == NULL) { 123 fprintf(stderr, "ERROR: Can't open replay file %s\n", filename); 124 } 125 126 _ci_inline_records = NULL; 127 _error_message = NULL; 128 129 _buffer_length = 32; 130 _buffer = NEW_RESOURCE_ARRAY(char, _buffer_length); 131 _bufptr = _buffer; 132 _buffer_pos = 0; 133 134 _imethod = NULL; 135 _iklass = NULL; 136 _entry_bci = 0; 137 _comp_level = 0; 138 139 test(); 140 } 141 142 ~CompileReplay() { 143 if (_stream != NULL) fclose(_stream); 144 } 145 146 void test() { 147 strcpy(_buffer, "1 2 foo 4 bar 0x9 \"this is it\""); 148 _bufptr = _buffer; 149 assert(parse_int("test") == 1, "what"); 150 assert(parse_int("test") == 2, "what"); 151 assert(strcmp(parse_string(), "foo") == 0, "what"); 152 assert(parse_int("test") == 4, "what"); 153 assert(strcmp(parse_string(), "bar") == 0, "what"); 154 assert(parse_intptr_t("test") == 9, "what"); 155 assert(strcmp(parse_quoted_string(), "this is it") == 0, "what"); 156 } 157 158 bool had_error() { 159 return _error_message != NULL || _thread->has_pending_exception(); 160 } 161 162 bool can_replay() { 163 return !(_stream == NULL || had_error()); 164 } 165 166 void report_error(const char* msg) { 167 _error_message = msg; 168 // Restore the _buffer contents for error reporting 169 for (int i = 0; i < _buffer_pos; i++) { 170 if (_buffer[i] == '\0') _buffer[i] = ' '; 171 } 172 } 173 174 int parse_int(const char* label) { 175 if (had_error()) { 176 return 0; 177 } 178 179 int v = 0; 180 int read; 181 if (sscanf(_bufptr, "%i%n", &v, &read) != 1) { 182 report_error(label); 183 } else { 184 _bufptr += read; 185 } 186 return v; 187 } 188 189 intptr_t parse_intptr_t(const char* label) { 190 if (had_error()) { 191 return 0; 192 } 193 194 intptr_t v = 0; 195 int read; 196 if (sscanf(_bufptr, INTPTR_FORMAT "%n", &v, &read) != 1) { 197 report_error(label); 198 } else { 199 _bufptr += read; 200 } 201 return v; 202 } 203 204 void skip_ws() { 205 // Skip any leading whitespace 206 while (*_bufptr == ' ' || *_bufptr == '\t') { 207 _bufptr++; 208 } 209 } 210 211 212 char* scan_and_terminate(char delim) { 213 char* str = _bufptr; 214 while (*_bufptr != delim && *_bufptr != '\0') { 215 _bufptr++; 216 } 217 if (*_bufptr != '\0') { 218 *_bufptr++ = '\0'; 219 } 220 if (_bufptr == str) { 221 // nothing here 222 return NULL; 223 } 224 return str; 225 } 226 227 char* parse_string() { 228 if (had_error()) return NULL; 229 230 skip_ws(); 231 return scan_and_terminate(' '); 232 } 233 234 char* parse_quoted_string() { 235 if (had_error()) return NULL; 236 237 skip_ws(); 238 239 if (*_bufptr == '"') { 240 _bufptr++; 241 return scan_and_terminate('"'); 242 } else { 243 return scan_and_terminate(' '); 244 } 245 } 246 247 const char* parse_escaped_string() { 248 char* result = parse_quoted_string(); 249 if (result != NULL) { 250 unescape_string(result); 251 } 252 return result; 253 } 254 255 // Look for the tag 'tag' followed by an 256 bool parse_tag_and_count(const char* tag, int& length) { 257 const char* t = parse_string(); 258 if (t == NULL) { 259 return false; 260 } 261 262 if (strcmp(tag, t) != 0) { 263 report_error(tag); 264 return false; 265 } 266 length = parse_int("parse_tag_and_count"); 267 return !had_error(); 268 } 269 270 // Parse a sequence of raw data encoded as bytes and return the 271 // resulting data. 272 char* parse_data(const char* tag, int& length) { 273 if (!parse_tag_and_count(tag, length)) { 274 return NULL; 275 } 276 277 char * result = NEW_RESOURCE_ARRAY(char, length); 278 for (int i = 0; i < length; i++) { 279 int val = parse_int("data"); 280 result[i] = val; 281 } 282 return result; 283 } 284 285 // Parse a standard chunk of data emitted as: 286 // 'tag' <length> # # ... 287 // Where each # is an intptr_t item 288 intptr_t* parse_intptr_data(const char* tag, int& length) { 289 if (!parse_tag_and_count(tag, length)) { 290 return NULL; 291 } 292 293 intptr_t* result = NEW_RESOURCE_ARRAY(intptr_t, length); 294 for (int i = 0; i < length; i++) { 295 skip_ws(); 296 intptr_t val = parse_intptr_t("data"); 297 result[i] = val; 298 } 299 return result; 300 } 301 302 // Parse a possibly quoted version of a symbol into a symbolOop 303 Symbol* parse_symbol(TRAPS) { 304 const char* str = parse_escaped_string(); 305 if (str != NULL) { 306 Symbol* sym = SymbolTable::lookup(str, (int)strlen(str), CHECK_NULL); 307 return sym; 308 } 309 return NULL; 310 } 311 312 // Parse a valid klass name and look it up 313 Klass* parse_klass(TRAPS) { 314 const char* str = parse_escaped_string(); 315 Symbol* klass_name = SymbolTable::lookup(str, (int)strlen(str), CHECK_NULL); 316 if (klass_name != NULL) { 317 Klass* k = NULL; 318 if (_iklass != NULL) { 319 k = (Klass*)_iklass->find_klass(ciSymbol::make(klass_name->as_C_string()))->constant_encoding(); 320 } else { 321 k = SystemDictionary::resolve_or_fail(klass_name, _loader, _protection_domain, true, THREAD); 322 } 323 if (HAS_PENDING_EXCEPTION) { 324 oop throwable = PENDING_EXCEPTION; 325 java_lang_Throwable::print(throwable, tty); 326 tty->cr(); 327 report_error(str); 328 if (ReplayIgnoreInitErrors) { 329 CLEAR_PENDING_EXCEPTION; 330 _error_message = NULL; 331 } 332 return NULL; 333 } 334 return k; 335 } 336 return NULL; 337 } 338 339 // Lookup a klass 340 Klass* resolve_klass(const char* klass, TRAPS) { 341 Symbol* klass_name = SymbolTable::lookup(klass, (int)strlen(klass), CHECK_NULL); 342 return SystemDictionary::resolve_or_fail(klass_name, _loader, _protection_domain, true, THREAD); 343 } 344 345 // Parse the standard tuple of <klass> <name> <signature> 346 Method* parse_method(TRAPS) { 347 InstanceKlass* k = (InstanceKlass*)parse_klass(CHECK_NULL); 348 if (k == NULL) { 349 report_error("Can't find holder klass"); 350 return NULL; 351 } 352 Symbol* method_name = parse_symbol(CHECK_NULL); 353 Symbol* method_signature = parse_symbol(CHECK_NULL); 354 Method* m = k->find_method(method_name, method_signature); 355 if (m == NULL) { 356 report_error("Can't find method"); 357 } 358 return m; 359 } 360 361 int get_line(int c) { 362 while(c != EOF) { 363 if (_buffer_pos + 1 >= _buffer_length) { 364 int new_length = _buffer_length * 2; 365 // Next call will throw error in case of OOM. 366 _buffer = REALLOC_RESOURCE_ARRAY(char, _buffer, _buffer_length, new_length); 367 _buffer_length = new_length; 368 } 369 if (c == '\n') { 370 c = getc(_stream); // get next char 371 break; 372 } else if (c == '\r') { 373 // skip LF 374 } else { 375 _buffer[_buffer_pos++] = c; 376 } 377 c = getc(_stream); 378 } 379 // null terminate it, reset the pointer 380 _buffer[_buffer_pos] = '\0'; // NL or EOF 381 _buffer_pos = 0; 382 _bufptr = _buffer; 383 return c; 384 } 385 386 // Process each line of the replay file executing each command until 387 // the file ends. 388 void process(TRAPS) { 389 int line_no = 1; 390 int c = getc(_stream); 391 while(c != EOF) { 392 c = get_line(c); 393 process_command(THREAD); 394 if (had_error()) { 395 tty->print_cr("Error while parsing line %d: %s\n", line_no, _error_message); 396 if (ReplayIgnoreInitErrors) { 397 CLEAR_PENDING_EXCEPTION; 398 _error_message = NULL; 399 } else { 400 return; 401 } 402 } 403 line_no++; 404 } 405 } 406 407 void process_command(TRAPS) { 408 char* cmd = parse_string(); 409 if (cmd == NULL) { 410 return; 411 } 412 if (strcmp("#", cmd) == 0) { 413 // ignore 414 } else if (strcmp("compile", cmd) == 0) { 415 process_compile(CHECK); 416 } else if (strcmp("ciMethod", cmd) == 0) { 417 process_ciMethod(CHECK); 418 } else if (strcmp("ciMethodData", cmd) == 0) { 419 process_ciMethodData(CHECK); 420 } else if (strcmp("staticfield", cmd) == 0) { 421 process_staticfield(CHECK); 422 } else if (strcmp("ciInstanceKlass", cmd) == 0) { 423 process_ciInstanceKlass(CHECK); 424 } else if (strcmp("instanceKlass", cmd) == 0) { 425 process_instanceKlass(CHECK); 426#if INCLUDE_JVMTI 427 } else if (strcmp("JvmtiExport", cmd) == 0) { 428 process_JvmtiExport(CHECK); 429#endif // INCLUDE_JVMTI 430 } else { 431 report_error("unknown command"); 432 } 433 } 434 435 // validation of comp_level 436 bool is_valid_comp_level(int comp_level) { 437 const int msg_len = 256; 438 char* msg = NULL; 439 if (!is_compile(comp_level)) { 440 msg = NEW_RESOURCE_ARRAY(char, msg_len); 441 jio_snprintf(msg, msg_len, "%d isn't compilation level", comp_level); 442 } else if (!TieredCompilation && (comp_level != CompLevel_highest_tier)) { 443 msg = NEW_RESOURCE_ARRAY(char, msg_len); 444 switch (comp_level) { 445 case CompLevel_simple: 446 jio_snprintf(msg, msg_len, "compilation level %d requires Client VM or TieredCompilation", comp_level); 447 break; 448 case CompLevel_full_optimization: 449 jio_snprintf(msg, msg_len, "compilation level %d requires Server VM", comp_level); 450 break; 451 default: 452 jio_snprintf(msg, msg_len, "compilation level %d requires TieredCompilation", comp_level); 453 } 454 } 455 if (msg != NULL) { 456 report_error(msg); 457 return false; 458 } 459 return true; 460 } 461 462 // compile <klass> <name> <signature> <entry_bci> <comp_level> inline <count> <depth> <bci> <klass> <name> <signature> ... 463 void* process_inline(ciMethod* imethod, Method* m, int entry_bci, int comp_level, TRAPS) { 464 _imethod = m; 465 _iklass = imethod->holder(); 466 _entry_bci = entry_bci; 467 _comp_level = comp_level; 468 int line_no = 1; 469 int c = getc(_stream); 470 while(c != EOF) { 471 c = get_line(c); 472 // Expecting only lines with "compile" command in inline replay file. 473 char* cmd = parse_string(); 474 if (cmd == NULL || strcmp("compile", cmd) != 0) { 475 return NULL; 476 } 477 process_compile(CHECK_NULL); 478 if (had_error()) { 479 tty->print_cr("Error while parsing line %d: %s\n", line_no, _error_message); 480 tty->print_cr("%s", _buffer); 481 return NULL; 482 } 483 if (_ci_inline_records != NULL && _ci_inline_records->length() > 0) { 484 // Found inlining record for the requested method. 485 return _ci_inline_records; 486 } 487 line_no++; 488 } 489 return NULL; 490 } 491 492 // compile <klass> <name> <signature> <entry_bci> <comp_level> inline <count> <depth> <bci> <klass> <name> <signature> ... 493 void process_compile(TRAPS) { 494 Method* method = parse_method(CHECK); 495 if (had_error()) return; 496 int entry_bci = parse_int("entry_bci"); 497 const char* comp_level_label = "comp_level"; 498 int comp_level = parse_int(comp_level_label); 499 // old version w/o comp_level 500 if (had_error() && (error_message() == comp_level_label)) { 501 // use highest available tier 502 comp_level = TieredCompilation ? TieredStopAtLevel : CompLevel_highest_tier; 503 } 504 if (!is_valid_comp_level(comp_level)) { 505 return; 506 } 507 if (_imethod != NULL) { 508 // Replay Inlining 509 if (entry_bci != _entry_bci || comp_level != _comp_level) { 510 return; 511 } 512 const char* iklass_name = _imethod->method_holder()->name()->as_utf8(); 513 const char* imethod_name = _imethod->name()->as_utf8(); 514 const char* isignature = _imethod->signature()->as_utf8(); 515 const char* klass_name = method->method_holder()->name()->as_utf8(); 516 const char* method_name = method->name()->as_utf8(); 517 const char* signature = method->signature()->as_utf8(); 518 if (strcmp(iklass_name, klass_name) != 0 || 519 strcmp(imethod_name, method_name) != 0 || 520 strcmp(isignature, signature) != 0) { 521 return; 522 } 523 } 524 int inline_count = 0; 525 if (parse_tag_and_count("inline", inline_count)) { 526 // Record inlining data 527 _ci_inline_records = new GrowableArray<ciInlineRecord*>(); 528 for (int i = 0; i < inline_count; i++) { 529 int depth = parse_int("inline_depth"); 530 int bci = parse_int("inline_bci"); 531 if (had_error()) { 532 break; 533 } 534 Method* inl_method = parse_method(CHECK); 535 if (had_error()) { 536 break; 537 } 538 new_ciInlineRecord(inl_method, bci, depth); 539 } 540 } 541 if (_imethod != NULL) { 542 return; // Replay Inlining 543 } 544 InstanceKlass* ik = method->method_holder(); 545 ik->initialize(THREAD); 546 if (HAS_PENDING_EXCEPTION) { 547 oop throwable = PENDING_EXCEPTION; 548 java_lang_Throwable::print(throwable, tty); 549 tty->cr(); 550 if (ReplayIgnoreInitErrors) { 551 CLEAR_PENDING_EXCEPTION; 552 ik->set_init_state(InstanceKlass::fully_initialized); 553 } else { 554 return; 555 } 556 } 557 // Make sure the existence of a prior compile doesn't stop this one 558 CompiledMethod* nm = (entry_bci != InvocationEntryBci) ? method->lookup_osr_nmethod_for(entry_bci, comp_level, true) : method->code(); 559 if (nm != NULL) { 560 nm->make_not_entrant(); 561 } 562 replay_state = this; 563 CompileBroker::compile_method(method, entry_bci, comp_level, 564 methodHandle(), 0, CompileTask::Reason_Replay, THREAD); 565 replay_state = NULL; 566 reset(); 567 } 568 569 // ciMethod <klass> <name> <signature> <invocation_counter> <backedge_counter> <interpreter_invocation_count> <interpreter_throwout_count> <instructions_size> 570 // 571 // 572 void process_ciMethod(TRAPS) { 573 Method* method = parse_method(CHECK); 574 if (had_error()) return; 575 ciMethodRecord* rec = new_ciMethod(method); 576 rec->_invocation_counter = parse_int("invocation_counter"); 577 rec->_backedge_counter = parse_int("backedge_counter"); 578 rec->_interpreter_invocation_count = parse_int("interpreter_invocation_count"); 579 rec->_interpreter_throwout_count = parse_int("interpreter_throwout_count"); 580 rec->_instructions_size = parse_int("instructions_size"); 581 } 582 583 // ciMethodData <klass> <name> <signature> <state> <current mileage> orig <length> # # ... data <length> # # ... oops <length> # ... methods <length> 584 void process_ciMethodData(TRAPS) { 585 Method* method = parse_method(CHECK); 586 if (had_error()) return; 587 /* just copied from Method, to build interpret data*/ 588 589 // To be properly initialized, some profiling in the MDO needs the 590 // method to be rewritten (number of arguments at a call for 591 // instance) 592 method->method_holder()->link_class(CHECK); 593 // methodOopDesc::build_interpreter_method_data(method, CHECK); 594 { 595 // Grab a lock here to prevent multiple 596 // MethodData*s from being created. 597 MutexLocker ml(MethodData_lock, THREAD); 598 if (method->method_data() == NULL) { 599 ClassLoaderData* loader_data = method->method_holder()->class_loader_data(); 600 MethodData* method_data = MethodData::allocate(loader_data, method, CHECK); 601 method->set_method_data(method_data); 602 } 603 } 604 605 // collect and record all the needed information for later 606 ciMethodDataRecord* rec = new_ciMethodData(method); 607 rec->_state = parse_int("state"); 608 rec->_current_mileage = parse_int("current_mileage"); 609 610 rec->_orig_data = parse_data("orig", rec->_orig_data_length); 611 if (rec->_orig_data == NULL) { 612 return; 613 } 614 rec->_data = parse_intptr_data("data", rec->_data_length); 615 if (rec->_data == NULL) { 616 return; 617 } 618 if (!parse_tag_and_count("oops", rec->_classes_length)) { 619 return; 620 } 621 rec->_classes = NEW_RESOURCE_ARRAY(Klass*, rec->_classes_length); 622 rec->_classes_offsets = NEW_RESOURCE_ARRAY(int, rec->_classes_length); 623 for (int i = 0; i < rec->_classes_length; i++) { 624 int offset = parse_int("offset"); 625 if (had_error()) { 626 return; 627 } 628 Klass* k = parse_klass(CHECK); 629 rec->_classes_offsets[i] = offset; 630 rec->_classes[i] = k; 631 } 632 633 if (!parse_tag_and_count("methods", rec->_methods_length)) { 634 return; 635 } 636 rec->_methods = NEW_RESOURCE_ARRAY(Method*, rec->_methods_length); 637 rec->_methods_offsets = NEW_RESOURCE_ARRAY(int, rec->_methods_length); 638 for (int i = 0; i < rec->_methods_length; i++) { 639 int offset = parse_int("offset"); 640 if (had_error()) { 641 return; 642 } 643 Method* m = parse_method(CHECK); 644 rec->_methods_offsets[i] = offset; 645 rec->_methods[i] = m; 646 } 647 } 648 649 // instanceKlass <name> 650 // 651 // Loads and initializes the klass 'name'. This can be used to 652 // create particular class loading environments 653 void process_instanceKlass(TRAPS) { 654 // just load the referenced class 655 Klass* k = parse_klass(CHECK); 656 } 657 658 // ciInstanceKlass <name> <is_linked> <is_initialized> <length> tag # # # ... 659 // 660 // Load the klass 'name' and link or initialize it. Verify that the 661 // constant pool is the same length as 'length' and make sure the 662 // constant pool tags are in the same state. 663 void process_ciInstanceKlass(TRAPS) { 664 InstanceKlass* k = (InstanceKlass *)parse_klass(CHECK); 665 if (k == NULL) { 666 return; 667 } 668 int is_linked = parse_int("is_linked"); 669 int is_initialized = parse_int("is_initialized"); 670 int length = parse_int("length"); 671 if (is_initialized) { 672 k->initialize(THREAD); 673 if (HAS_PENDING_EXCEPTION) { 674 oop throwable = PENDING_EXCEPTION; 675 java_lang_Throwable::print(throwable, tty); 676 tty->cr(); 677 if (ReplayIgnoreInitErrors) { 678 CLEAR_PENDING_EXCEPTION; 679 k->set_init_state(InstanceKlass::fully_initialized); 680 } else { 681 return; 682 } 683 } 684 } else if (is_linked) { 685 k->link_class(CHECK); 686 } 687 ConstantPool* cp = k->constants(); 688 if (length != cp->length()) { 689 report_error("constant pool length mismatch: wrong class files?"); 690 return; 691 } 692 693 int parsed_two_word = 0; 694 for (int i = 1; i < length; i++) { 695 int tag = parse_int("tag"); 696 if (had_error()) { 697 return; 698 } 699 switch (cp->tag_at(i).value()) { 700 case JVM_CONSTANT_UnresolvedClass: { 701 if (tag == JVM_CONSTANT_Class) { 702 tty->print_cr("Resolving klass %s at %d", cp->klass_name_at(i)->as_utf8(), i); 703 Klass* k = cp->klass_at(i, CHECK); 704 } 705 break; 706 } 707 case JVM_CONSTANT_Long: 708 case JVM_CONSTANT_Double: 709 parsed_two_word = i + 1; 710 711 case JVM_CONSTANT_ClassIndex: 712 case JVM_CONSTANT_StringIndex: 713 case JVM_CONSTANT_String: 714 case JVM_CONSTANT_UnresolvedClassInError: 715 case JVM_CONSTANT_Fieldref: 716 case JVM_CONSTANT_Methodref: 717 case JVM_CONSTANT_InterfaceMethodref: 718 case JVM_CONSTANT_NameAndType: 719 case JVM_CONSTANT_Utf8: 720 case JVM_CONSTANT_Integer: 721 case JVM_CONSTANT_Float: 722 case JVM_CONSTANT_MethodHandle: 723 case JVM_CONSTANT_MethodType: 724 case JVM_CONSTANT_InvokeDynamic: 725 if (tag != cp->tag_at(i).value()) { 726 report_error("tag mismatch: wrong class files?"); 727 return; 728 } 729 break; 730 731 case JVM_CONSTANT_Class: 732 if (tag == JVM_CONSTANT_Class) { 733 } else if (tag == JVM_CONSTANT_UnresolvedClass) { 734 tty->print_cr("Warning: entry was unresolved in the replay data"); 735 } else { 736 report_error("Unexpected tag"); 737 return; 738 } 739 break; 740 741 case 0: 742 if (parsed_two_word == i) continue; 743 744 default: 745 fatal("Unexpected tag: %d", cp->tag_at(i).value()); 746 break; 747 } 748 749 } 750 } 751 752 // Initialize a class and fill in the value for a static field. 753 // This is useful when the compile was dependent on the value of 754 // static fields but it's impossible to properly rerun the static 755 // initiailizer. 756 void process_staticfield(TRAPS) { 757 InstanceKlass* k = (InstanceKlass *)parse_klass(CHECK); 758 759 if (k == NULL || ReplaySuppressInitializers == 0 || 760 (ReplaySuppressInitializers == 2 && k->class_loader() == NULL)) { 761 return; 762 } 763 764 assert(k->is_initialized(), "must be"); 765 766 const char* field_name = parse_escaped_string(); 767 const char* field_signature = parse_string(); 768 fieldDescriptor fd; 769 Symbol* name = SymbolTable::lookup(field_name, (int)strlen(field_name), CHECK); 770 Symbol* sig = SymbolTable::lookup(field_signature, (int)strlen(field_signature), CHECK); 771 if (!k->find_local_field(name, sig, &fd) || 772 !fd.is_static() || 773 fd.has_initial_value()) { 774 report_error(field_name); 775 return; 776 } 777 778 oop java_mirror = k->java_mirror(); 779 if (field_signature[0] == '[') { 780 int length = parse_int("array length"); 781 oop value = NULL; 782 783 if (field_signature[1] == '[') { 784 // multi dimensional array 785 ArrayKlass* kelem = (ArrayKlass *)parse_klass(CHECK); 786 if (kelem == NULL) { 787 return; 788 } 789 int rank = 0; 790 while (field_signature[rank] == '[') { 791 rank++; 792 } 793 int* dims = NEW_RESOURCE_ARRAY(int, rank); 794 dims[0] = length; 795 for (int i = 1; i < rank; i++) { 796 dims[i] = 1; // These aren't relevant to the compiler 797 } 798 value = kelem->multi_allocate(rank, dims, CHECK); 799 } else { 800 if (strcmp(field_signature, "[B") == 0) { 801 value = oopFactory::new_byteArray(length, CHECK); 802 } else if (strcmp(field_signature, "[Z") == 0) { 803 value = oopFactory::new_boolArray(length, CHECK); 804 } else if (strcmp(field_signature, "[C") == 0) { 805 value = oopFactory::new_charArray(length, CHECK); 806 } else if (strcmp(field_signature, "[S") == 0) { 807 value = oopFactory::new_shortArray(length, CHECK); 808 } else if (strcmp(field_signature, "[F") == 0) { 809 value = oopFactory::new_singleArray(length, CHECK); 810 } else if (strcmp(field_signature, "[D") == 0) { 811 value = oopFactory::new_doubleArray(length, CHECK); 812 } else if (strcmp(field_signature, "[I") == 0) { 813 value = oopFactory::new_intArray(length, CHECK); 814 } else if (strcmp(field_signature, "[J") == 0) { 815 value = oopFactory::new_longArray(length, CHECK); 816 } else if (field_signature[0] == '[' && field_signature[1] == 'L') { 817 Klass* kelem = resolve_klass(field_signature + 1, CHECK); 818 value = oopFactory::new_objArray(kelem, length, CHECK); 819 } else { 820 report_error("unhandled array staticfield"); 821 } 822 } 823 java_mirror->obj_field_put(fd.offset(), value); 824 } else { 825 const char* string_value = parse_escaped_string(); 826 if (strcmp(field_signature, "I") == 0) { 827 int value = atoi(string_value); 828 java_mirror->int_field_put(fd.offset(), value); 829 } else if (strcmp(field_signature, "B") == 0) { 830 int value = atoi(string_value); 831 java_mirror->byte_field_put(fd.offset(), value); 832 } else if (strcmp(field_signature, "C") == 0) { 833 int value = atoi(string_value); 834 java_mirror->char_field_put(fd.offset(), value); 835 } else if (strcmp(field_signature, "S") == 0) { 836 int value = atoi(string_value); 837 java_mirror->short_field_put(fd.offset(), value); 838 } else if (strcmp(field_signature, "Z") == 0) { 839 int value = atoi(string_value); 840 java_mirror->bool_field_put(fd.offset(), value); 841 } else if (strcmp(field_signature, "J") == 0) { 842 jlong value; 843 if (sscanf(string_value, JLONG_FORMAT, &value) != 1) { 844 fprintf(stderr, "Error parsing long: %s\n", string_value); 845 return; 846 } 847 java_mirror->long_field_put(fd.offset(), value); 848 } else if (strcmp(field_signature, "F") == 0) { 849 float value = atof(string_value); 850 java_mirror->float_field_put(fd.offset(), value); 851 } else if (strcmp(field_signature, "D") == 0) { 852 double value = atof(string_value); 853 java_mirror->double_field_put(fd.offset(), value); 854 } else if (strcmp(field_signature, "Ljava/lang/String;") == 0) { 855 Handle value = java_lang_String::create_from_str(string_value, CHECK); 856 java_mirror->obj_field_put(fd.offset(), value()); 857 } else if (field_signature[0] == 'L') { 858 Klass* k = resolve_klass(string_value, CHECK); 859 oop value = InstanceKlass::cast(k)->allocate_instance(CHECK); 860 java_mirror->obj_field_put(fd.offset(), value); 861 } else { 862 report_error("unhandled staticfield"); 863 } 864 } 865 } 866 867#if INCLUDE_JVMTI 868 void process_JvmtiExport(TRAPS) { 869 const char* field = parse_string(); 870 bool value = parse_int("JvmtiExport flag") != 0; 871 if (strcmp(field, "can_access_local_variables") == 0) { 872 JvmtiExport::set_can_access_local_variables(value); 873 } else if (strcmp(field, "can_hotswap_or_post_breakpoint") == 0) { 874 JvmtiExport::set_can_hotswap_or_post_breakpoint(value); 875 } else if (strcmp(field, "can_post_on_exceptions") == 0) { 876 JvmtiExport::set_can_post_on_exceptions(value); 877 } else { 878 report_error("Unrecognized JvmtiExport directive"); 879 } 880 } 881#endif // INCLUDE_JVMTI 882 883 // Create and initialize a record for a ciMethod 884 ciMethodRecord* new_ciMethod(Method* method) { 885 ciMethodRecord* rec = NEW_RESOURCE_OBJ(ciMethodRecord); 886 rec->_klass_name = method->method_holder()->name()->as_utf8(); 887 rec->_method_name = method->name()->as_utf8(); 888 rec->_signature = method->signature()->as_utf8(); 889 _ci_method_records.append(rec); 890 return rec; 891 } 892 893 // Lookup data for a ciMethod 894 ciMethodRecord* find_ciMethodRecord(Method* method) { 895 const char* klass_name = method->method_holder()->name()->as_utf8(); 896 const char* method_name = method->name()->as_utf8(); 897 const char* signature = method->signature()->as_utf8(); 898 for (int i = 0; i < _ci_method_records.length(); i++) { 899 ciMethodRecord* rec = _ci_method_records.at(i); 900 if (strcmp(rec->_klass_name, klass_name) == 0 && 901 strcmp(rec->_method_name, method_name) == 0 && 902 strcmp(rec->_signature, signature) == 0) { 903 return rec; 904 } 905 } 906 return NULL; 907 } 908 909 // Create and initialize a record for a ciMethodData 910 ciMethodDataRecord* new_ciMethodData(Method* method) { 911 ciMethodDataRecord* rec = NEW_RESOURCE_OBJ(ciMethodDataRecord); 912 rec->_klass_name = method->method_holder()->name()->as_utf8(); 913 rec->_method_name = method->name()->as_utf8(); 914 rec->_signature = method->signature()->as_utf8(); 915 _ci_method_data_records.append(rec); 916 return rec; 917 } 918 919 // Lookup data for a ciMethodData 920 ciMethodDataRecord* find_ciMethodDataRecord(Method* method) { 921 const char* klass_name = method->method_holder()->name()->as_utf8(); 922 const char* method_name = method->name()->as_utf8(); 923 const char* signature = method->signature()->as_utf8(); 924 for (int i = 0; i < _ci_method_data_records.length(); i++) { 925 ciMethodDataRecord* rec = _ci_method_data_records.at(i); 926 if (strcmp(rec->_klass_name, klass_name) == 0 && 927 strcmp(rec->_method_name, method_name) == 0 && 928 strcmp(rec->_signature, signature) == 0) { 929 return rec; 930 } 931 } 932 return NULL; 933 } 934 935 // Create and initialize a record for a ciInlineRecord 936 ciInlineRecord* new_ciInlineRecord(Method* method, int bci, int depth) { 937 ciInlineRecord* rec = NEW_RESOURCE_OBJ(ciInlineRecord); 938 rec->_klass_name = method->method_holder()->name()->as_utf8(); 939 rec->_method_name = method->name()->as_utf8(); 940 rec->_signature = method->signature()->as_utf8(); 941 rec->_inline_bci = bci; 942 rec->_inline_depth = depth; 943 _ci_inline_records->append(rec); 944 return rec; 945 } 946 947 // Lookup inlining data for a ciMethod 948 ciInlineRecord* find_ciInlineRecord(Method* method, int bci, int depth) { 949 if (_ci_inline_records != NULL) { 950 return find_ciInlineRecord(_ci_inline_records, method, bci, depth); 951 } 952 return NULL; 953 } 954 955 static ciInlineRecord* find_ciInlineRecord(GrowableArray<ciInlineRecord*>* records, 956 Method* method, int bci, int depth) { 957 if (records != NULL) { 958 const char* klass_name = method->method_holder()->name()->as_utf8(); 959 const char* method_name = method->name()->as_utf8(); 960 const char* signature = method->signature()->as_utf8(); 961 for (int i = 0; i < records->length(); i++) { 962 ciInlineRecord* rec = records->at(i); 963 if ((rec->_inline_bci == bci) && 964 (rec->_inline_depth == depth) && 965 (strcmp(rec->_klass_name, klass_name) == 0) && 966 (strcmp(rec->_method_name, method_name) == 0) && 967 (strcmp(rec->_signature, signature) == 0)) { 968 return rec; 969 } 970 } 971 } 972 return NULL; 973 } 974 975 const char* error_message() { 976 return _error_message; 977 } 978 979 void reset() { 980 _error_message = NULL; 981 _ci_method_records.clear(); 982 _ci_method_data_records.clear(); 983 } 984 985 // Take an ascii string contain \u#### escapes and convert it to utf8 986 // in place. 987 static void unescape_string(char* value) { 988 char* from = value; 989 char* to = value; 990 while (*from != '\0') { 991 if (*from != '\\') { 992 *from++ = *to++; 993 } else { 994 switch (from[1]) { 995 case 'u': { 996 from += 2; 997 jchar value=0; 998 for (int i=0; i<4; i++) { 999 char c = *from++; 1000 switch (c) { 1001 case '0': case '1': case '2': case '3': case '4': 1002 case '5': case '6': case '7': case '8': case '9': 1003 value = (value << 4) + c - '0'; 1004 break; 1005 case 'a': case 'b': case 'c': 1006 case 'd': case 'e': case 'f': 1007 value = (value << 4) + 10 + c - 'a'; 1008 break; 1009 case 'A': case 'B': case 'C': 1010 case 'D': case 'E': case 'F': 1011 value = (value << 4) + 10 + c - 'A'; 1012 break; 1013 default: 1014 ShouldNotReachHere(); 1015 } 1016 } 1017 UNICODE::convert_to_utf8(&value, 1, to); 1018 to++; 1019 break; 1020 } 1021 case 't': *to++ = '\t'; from += 2; break; 1022 case 'n': *to++ = '\n'; from += 2; break; 1023 case 'r': *to++ = '\r'; from += 2; break; 1024 case 'f': *to++ = '\f'; from += 2; break; 1025 default: 1026 ShouldNotReachHere(); 1027 } 1028 } 1029 } 1030 *from = *to; 1031 } 1032}; 1033 1034void ciReplay::replay(TRAPS) { 1035 int exit_code = replay_impl(THREAD); 1036 1037 Threads::destroy_vm(); 1038 1039 vm_exit(exit_code); 1040} 1041 1042void* ciReplay::load_inline_data(ciMethod* method, int entry_bci, int comp_level) { 1043 if (FLAG_IS_DEFAULT(InlineDataFile)) { 1044 tty->print_cr("ERROR: no inline replay data file specified (use -XX:InlineDataFile=inline_pid12345.txt)."); 1045 return NULL; 1046 } 1047 1048 VM_ENTRY_MARK; 1049 // Load and parse the replay data 1050 CompileReplay rp(InlineDataFile, THREAD); 1051 if (!rp.can_replay()) { 1052 tty->print_cr("ciReplay: !rp.can_replay()"); 1053 return NULL; 1054 } 1055 void* data = rp.process_inline(method, method->get_Method(), entry_bci, comp_level, THREAD); 1056 if (HAS_PENDING_EXCEPTION) { 1057 Handle throwable(THREAD, PENDING_EXCEPTION); 1058 CLEAR_PENDING_EXCEPTION; 1059 java_lang_Throwable::print_stack_trace(throwable, tty); 1060 tty->cr(); 1061 return NULL; 1062 } 1063 1064 if (rp.had_error()) { 1065 tty->print_cr("ciReplay: Failed on %s", rp.error_message()); 1066 return NULL; 1067 } 1068 return data; 1069} 1070 1071int ciReplay::replay_impl(TRAPS) { 1072 HandleMark hm; 1073 ResourceMark rm; 1074 1075 if (ReplaySuppressInitializers > 2) { 1076 // ReplaySuppressInitializers > 2 means that we want to allow 1077 // normal VM bootstrap but once we get into the replay itself 1078 // don't allow any intializers to be run. 1079 ReplaySuppressInitializers = 1; 1080 } 1081 1082 if (FLAG_IS_DEFAULT(ReplayDataFile)) { 1083 tty->print_cr("ERROR: no compiler replay data file specified (use -XX:ReplayDataFile=replay_pid12345.txt)."); 1084 return 1; 1085 } 1086 1087 // Load and parse the replay data 1088 CompileReplay rp(ReplayDataFile, THREAD); 1089 int exit_code = 0; 1090 if (rp.can_replay()) { 1091 rp.process(THREAD); 1092 } else { 1093 exit_code = 1; 1094 return exit_code; 1095 } 1096 1097 if (HAS_PENDING_EXCEPTION) { 1098 Handle throwable(THREAD, PENDING_EXCEPTION); 1099 CLEAR_PENDING_EXCEPTION; 1100 java_lang_Throwable::print_stack_trace(throwable, tty); 1101 tty->cr(); 1102 exit_code = 2; 1103 } 1104 1105 if (rp.had_error()) { 1106 tty->print_cr("Failed on %s", rp.error_message()); 1107 exit_code = 1; 1108 } 1109 return exit_code; 1110} 1111 1112void ciReplay::initialize(ciMethodData* m) { 1113 if (replay_state == NULL) { 1114 return; 1115 } 1116 1117 ASSERT_IN_VM; 1118 ResourceMark rm; 1119 1120 Method* method = m->get_MethodData()->method(); 1121 ciMethodDataRecord* rec = replay_state->find_ciMethodDataRecord(method); 1122 if (rec == NULL) { 1123 // This indicates some mismatch with the original environment and 1124 // the replay environment though it's not always enough to 1125 // interfere with reproducing a bug 1126 tty->print_cr("Warning: requesting ciMethodData record for method with no data: "); 1127 method->print_name(tty); 1128 tty->cr(); 1129 } else { 1130 m->_state = rec->_state; 1131 m->_current_mileage = rec->_current_mileage; 1132 if (rec->_data_length != 0) { 1133 assert(m->_data_size + m->_extra_data_size == rec->_data_length * (int)sizeof(rec->_data[0]) || 1134 m->_data_size == rec->_data_length * (int)sizeof(rec->_data[0]), "must agree"); 1135 1136 // Write the correct ciObjects back into the profile data 1137 ciEnv* env = ciEnv::current(); 1138 for (int i = 0; i < rec->_classes_length; i++) { 1139 Klass *k = rec->_classes[i]; 1140 // In case this class pointer is is tagged, preserve the tag bits 1141 intptr_t status = 0; 1142 if (k != NULL) { 1143 status = ciTypeEntries::with_status(env->get_metadata(k)->as_klass(), rec->_data[rec->_classes_offsets[i]]); 1144 } 1145 rec->_data[rec->_classes_offsets[i]] = status; 1146 } 1147 for (int i = 0; i < rec->_methods_length; i++) { 1148 Method *m = rec->_methods[i]; 1149 *(ciMetadata**)(rec->_data + rec->_methods_offsets[i]) = 1150 env->get_metadata(m); 1151 } 1152 // Copy the updated profile data into place as intptr_ts 1153#ifdef _LP64 1154 Copy::conjoint_jlongs_atomic((jlong *)rec->_data, (jlong *)m->_data, rec->_data_length); 1155#else 1156 Copy::conjoint_jints_atomic((jint *)rec->_data, (jint *)m->_data, rec->_data_length); 1157#endif 1158 } 1159 1160 // copy in the original header 1161 Copy::conjoint_jbytes(rec->_orig_data, (char*)&m->_orig, rec->_orig_data_length); 1162 } 1163} 1164 1165 1166bool ciReplay::should_not_inline(ciMethod* method) { 1167 if (replay_state == NULL) { 1168 return false; 1169 } 1170 VM_ENTRY_MARK; 1171 // ciMethod without a record shouldn't be inlined. 1172 return replay_state->find_ciMethodRecord(method->get_Method()) == NULL; 1173} 1174 1175bool ciReplay::should_inline(void* data, ciMethod* method, int bci, int inline_depth) { 1176 if (data != NULL) { 1177 GrowableArray<ciInlineRecord*>* records = (GrowableArray<ciInlineRecord*>*)data; 1178 VM_ENTRY_MARK; 1179 // Inline record are ordered by bci and depth. 1180 return CompileReplay::find_ciInlineRecord(records, method->get_Method(), bci, inline_depth) != NULL; 1181 } else if (replay_state != NULL) { 1182 VM_ENTRY_MARK; 1183 // Inline record are ordered by bci and depth. 1184 return replay_state->find_ciInlineRecord(method->get_Method(), bci, inline_depth) != NULL; 1185 } 1186 return false; 1187} 1188 1189bool ciReplay::should_not_inline(void* data, ciMethod* method, int bci, int inline_depth) { 1190 if (data != NULL) { 1191 GrowableArray<ciInlineRecord*>* records = (GrowableArray<ciInlineRecord*>*)data; 1192 VM_ENTRY_MARK; 1193 // Inline record are ordered by bci and depth. 1194 return CompileReplay::find_ciInlineRecord(records, method->get_Method(), bci, inline_depth) == NULL; 1195 } else if (replay_state != NULL) { 1196 VM_ENTRY_MARK; 1197 // Inline record are ordered by bci and depth. 1198 return replay_state->find_ciInlineRecord(method->get_Method(), bci, inline_depth) == NULL; 1199 } 1200 return false; 1201} 1202 1203void ciReplay::initialize(ciMethod* m) { 1204 if (replay_state == NULL) { 1205 return; 1206 } 1207 1208 ASSERT_IN_VM; 1209 ResourceMark rm; 1210 1211 Method* method = m->get_Method(); 1212 ciMethodRecord* rec = replay_state->find_ciMethodRecord(method); 1213 if (rec == NULL) { 1214 // This indicates some mismatch with the original environment and 1215 // the replay environment though it's not always enough to 1216 // interfere with reproducing a bug 1217 tty->print_cr("Warning: requesting ciMethod record for method with no data: "); 1218 method->print_name(tty); 1219 tty->cr(); 1220 } else { 1221 EXCEPTION_CONTEXT; 1222 // m->_instructions_size = rec->_instructions_size; 1223 m->_instructions_size = -1; 1224 m->_interpreter_invocation_count = rec->_interpreter_invocation_count; 1225 m->_interpreter_throwout_count = rec->_interpreter_throwout_count; 1226 MethodCounters* mcs = method->get_method_counters(CHECK_AND_CLEAR); 1227 guarantee(mcs != NULL, "method counters allocation failed"); 1228 mcs->invocation_counter()->_counter = rec->_invocation_counter; 1229 mcs->backedge_counter()->_counter = rec->_backedge_counter; 1230 } 1231} 1232 1233bool ciReplay::is_loaded(Method* method) { 1234 if (replay_state == NULL) { 1235 return true; 1236 } 1237 1238 ASSERT_IN_VM; 1239 ResourceMark rm; 1240 1241 ciMethodRecord* rec = replay_state->find_ciMethodRecord(method); 1242 return rec != NULL; 1243} 1244#endif // PRODUCT 1245